Year	Thousands of Persons
1990-01-01	8.7
1991-01-01	8.5
1992-01-01	8.4
1993-01-01	8.1
1994-01-01	8.9
1995-01-01	8.3
1996-01-01	9.3
1997-01-01	9.0
1998-01-01	8.9
1999-01-01	8.7
2000-01-01	8.9
2001-01-01	7.6
2002-01-01	7.2
2003-01-01	7.7
2004-01-01	7.7
2005-01-01	7.3
2006-01-01	6.8
2007-01-01	6.7
2008-01-01	6.4
2009-01-01	5.3
2010-01-01	5.0
2011-01-01	5.1
2012-01-01	5.2
2013-01-01	5.2
2014-01-01	5.0
2015-01-01	4.7
2016-01-01	4.3
2017-01-01	4.1